The T31G is Yealink's entry-level Gigabit desk phone. Two SIP lines, a 2.3-inch LCD display, HD audio, and dual Gigabit Ethernet ports. The only meaningful hardware difference from the T31P is the Gigabit switch port -- if your office network is all-Gigabit and you want consistent port speeds throughout, the T31G is the correct choice at a modest premium.
By the Need to Know Comms Team · Last updated 15 September 2026
86/100
NTK ScoreRecommended
Relevance19/20
The T31G closely matches routine small-office calling needs with mature SIP features, although a fixed desk endpoint is unnecessary for increasingly mobile-only businesses.
Effort17/20
Auto-provisioning, open SIP and strong platform documentation simplify deployment, but cloud PBX topology, PoE and previously registered provisioning profiles can add administrator work.
Adoption16/20
Familiar hardware controls, dedicated call keys and clear audio minimise user friction, while the small display and undocumented vendor response times prevent top marks.
Commercial value17/20
Transparent sub-A$110 pricing, broad retail availability and mass provisioning support make fleets economical, but independently quantified productivity savings or payback evidence is unavailable.
Trust17/20
Modern encryption, open SIP, active security remediation and Australian channels are strong; model-specific RCM publication, long-term update commitments and provisioning-profile portability remain caveats.
What to know before buying
Typical single-site SMB buying authorized Australian stock: Recommended.
Fleet buyers requiring more than 12 months of hardware cover: Recommended with caveats. Confirm extended coverage in writing.
Grey-market or direct-import buyers unable to verify RCM: Not recommended for that stock path.
Warranty pathway Changes recommendation
Yealink's current APAC limited warranty gives T3-series SIP phones 12 months and excludes products bought through unauthorized distributors or resellers. Some Australian reseller copy separately claims 36 months, so the advertised pathway is inconsistent across sellers.
A fleet buyer assuming three-year manufacturer cover could face uncovered failures after the first year or discover that an unauthorized purchase is ineligible for Yealink service.
Matters most to: Businesses deploying a multi-handset fleet, retaining phones beyond one year, or purchasing through marketplace and grey-import sellers. · Use Yealink's Australian authorized-reseller list and obtain the exact warranty duration, provider of cover and RMA process in writing before ordering.
Business-use suitability Changes recommendation
A publicly searchable, model-specific Australian RCM declaration for the SIP-T31G was not located. Australian retailers identify local stock as the Australian version, and no evidence of confirmed non-compliance was found.
RCM responsibility follows the Australian supplier and stock path; imported or grey-market units may not provide the same compliance assurance as authorized Australian stock.
Matters most to: Businesses directly importing handsets, buying used or grey-market units, or operating under procurement policies that require documented Australian regulatory compliance. · Purchase Australian-channel stock and inspect the handset or packaging for the RCM; request the responsible supplier's compliance documentation when formal evidence is required.
Who is this phone for?
The T31G is the right phone for businesses that need a capable, no-frills desk phone and want consistent Gigabit connectivity throughout the office. At two SIP lines and a compact 2.3-inch LCD screen, it is not a power-user phone -- but for staff who take and make calls without needing to monitor multiple lines, it covers everything required.
Buy it for: light-duty admin desks, back-office roles, and any position where one active call at a time is the norm -- it is not suited to a busy multi-line reception desk. It can be used over an NBN internet connection with a compatible SIP service; confirm provider support and provisioning before purchase.
Step up to the T33G if you need a colour screen and more programmable line keys. Step up to the T43U if you need a larger display and more programmable keys for BLF monitoring. The T31G makes most sense when you are deploying multiple handsets across an office and want a cost-effective standard handset for non-specialist desks.
Specs at a glance
SIP accounts
2
Screen
2.3" 132x64 pixel grayscale LCD
DSS keys
2 (programmable)
PoE
Yes (802.3af)
Switch port
Gigabit (1000Mbps)
Wi-Fi
No
Bluetooth
No
Headset port
RJ9
Codecs
G.711a/u, G.722 (HD), G.723.1, G.726, G.729ab, iLBC, Opus
SRTP / TLS
Yes
T31G vs T31P -- what's the actual difference?
The T31G and T31P are identical in almost every respect. Same screen, same SIP account count, same DSS key layout, same HD audio codecs, same PoE support. The one hardware difference is the built-in Ethernet switch port: the T31G is Gigabit (1000Mbps), the T31P is Fast Ethernet (100Mbps).
For voice calls, Fast Ethernet is more than sufficient. A G.711 or G.722 call commonly uses roughly 80-100 Kbps including protocol overhead; actual bandwidth varies by codec, packetisation and network encapsulation. -- a fraction of what a 100Mbps port can carry. You will never saturate a 100Mbps port with voice traffic alone.
The case for the T31G comes from network consistency and IT standards, not from call quality. If your office is running Gigabit switches throughout and you prefer all devices presenting at the same speed, the T31G fits that standard. Autonegotiation problems are generally configuration or endpoint-compatibility issues; both 100 Mbps and 1 Gbps copper links can autonegotiate, so choosing the T31G does not categorically eliminate that risk.
For most small businesses, the T31P is the sensible default. The T31G is the right choice when network homogeneity is a deliberate infrastructure decision.
Call quality on Australian NBN
The T31G can be used over an NBN internet connection with a compatible SIP service, but performance depends on the access technology, network configuration, provider and wider voice path. It supports G.722 (HD voice) and handles standard G.711 at full quality. FTTP and FTTC can carry VoIP, but access technology alone does not guarantee PSTN-equivalent call quality. nbn’s Targeted Upgrade program applies to selected legacy nbn copper-based connections where full fibre is available; first suspensions under that program are not expected before January 2028.
On HFC or FTTN connections where upload jitter can be higher, enable QoS (quality of service) on your router to prioritise voice traffic. Follow your VoIP provider’s and router vendor’s guidance on SIP ALG. Many SIP services recommend disabling it, but some router and firmware combinations require it to remain enabled.
The T31G connects via its Gigabit Ethernet port to the network switch or router directly. The handset’s local network connection is wired, so that hop is not affected by local Wi-Fi interference; end-to-end call quality still depends on the router, access network, provider and wider voice path.
Build quality and design
The T31G has the same compact form factor as the T31P. The phone is lightweight and takes up minimal desk space -- appropriate for desks where a smaller footprint matters. The 2.3-inch screen is functional rather than impressive: it shows caller ID, time, date, and SIP registration status clearly, but does not have a touch interface or colour display.
The two DSS keys alongside the screen are programmable for BLF, speed dial, or line monitoring. The keypad has clear key labelling and good tactile feedback. The handset connects through an RJ9 (4P4C) handset port; verify any replacement cable with the seller or Yealink.
Build quality is consistent with the Yealink T-series range -- designed for office deployment, not consumer aesthetics.
What works / What doesn't
Pros
Gigabit switch port -- consistent with all-Gigabit office networks
HD audio (G.722) -- noticeably better call clarity than G.711 alone
2 SIP accounts only -- not suitable for a busy reception desk or multi-line use
Grayscale LCD -- no colour screen
2 DSS keys -- limited BLF capacity
No Wi-Fi or Bluetooth -- cabled connection required
Gigabit benefit is theoretical for voice -- does not affect call quality
Australian pricing and where to buy
The T31G is stocked by Digiphone and several Australian IT retailers. Current advertised Australian pricing varies by retailer; check the live comparison and confirm stock and GST before purchase. Prices on this page are updated nightly via StaticICE.
The T31P is typically $15-$20 cheaper per unit. For a multi-desk deployment where the Gigabit feature is not a specific requirement, the T31P is the better value. For an IT department standardising on Gigabit across all ports, the T31G is worth the small premium applied across the installation.
Check current price via the Digiphone link above, which reflects live Australian stock and pricing.
Deploying T31G handsets? MaxoTel supports automatic provisioning for compatible Yealink models. Some older Yealink T-series models are no longer compatible, and MaxoTel does not guarantee initial or ongoing provisioning for phones purchased from third parties.
The T31G is a solid entry-level phone for single-line use cases, with the specific advantage of a Gigabit switch port over the T31P. If your office network is all-Gigabit and you want consistent port speeds across every connected device, the T31G is the correct choice at a small premium.
For most small businesses, the T31P covers everything needed at a lower price. The T31G's value is narrow but real for the right deployment context. For a full comparison of available handsets, see our SIP desk phone buying guide for Australia. For help choosing the right VoIP setup for your business, see our best phone system guide.
Frequently asked questions
What is the difference between the Yealink T31G and T31P?
The only hardware difference is the Ethernet switch port: the T31G has a Gigabit (1000Mbps) port, the T31P has a Fast Ethernet (100Mbps) port. Both phones have the same screen, same 2 SIP accounts, same DSS keys, and same HD audio codecs. Both phones list the same supported audio codecs and HD Voice features; actual call quality depends on the wider call path and configuration.
Does the Yealink T31G work on Australian NBN?
Yes. The T31G can be used over an NBN internet connection with a compatible SIP service. Confirm provider support and provisioning before purchase, because some Australian NBN voice services restrict third-party equipment. Follow your VoIP provider’s and router vendor’s guidance on SIP ALG and QoS. G.722 HD audio requires end-to-end wideband codec support, which varies by VOIP provider and service.
Can I use the Yealink T31G with Maxotel?
MaxoTel documents automatic provisioning for current, up-to-date Yealink handsets; confirm the T31G and firmware with MaxoTel, and verify compatibility separately with any other provider. MaxoTel supports automatic provisioning for current, up-to-date Yealink handsets, but the phone must be added and assigned in the My Account portal; third-party phones are not guaranteed initial success or ongoing support.
Does the T31G need a separate power adapter?
No, if your network switch supports PoE (Power over Ethernet, 802.3af). The T31G draws power from the Ethernet cable when connected to a PoE switch. If your switch does not support PoE, a compatible Yealink AC adapter is required; Yealink’s T31G datasheet specifies a DC 5 V/0.6 A output.
Not sure whether the T31G or T31P is the right fit for your deployment?